岩石

The first method is not related to petrogenesis, but welcomed by its benefit in field work and basic petrology research; the second method reflects magma sources and tectonic environment, which has always been considered to be very important since proposed, especially a steady flow of A-type granite result in recent years; the third method, often used by researchers, consists of information about mineralogy, petology and magma source; the last method is characterized for its simple and uniform classification criterion, as well as strong operability.

矿物学－岩石学分类不涉及成因信息，比较适用于野外工作以及最基本的岩石学研究；ISMA分类的标准反映的是岩浆源区和构造环境，自提出后备受重视，尤其是A型花岗岩的研究成果近来大量涌现；Barbarin的综合性分类包含了矿物学、岩石学和岩浆源区的信息，也受到一定的推崇；Frost的地球化学分类标准统一，具有很强的操作性。

In this paper the author discusses the petrography feature of the rock in the scale ductile shear zone and the characteristics of the shear belt.

本文主要从岩石学的角度论述了两条韧性剪切带内的岩石岩相学特征，讨论了韧性剪切带以及剪切带内岩石的特征。

Rock destroys the petrosal in the process sound blasts off to lead and can be led completely not consistent, sound launchs the metabolic rule that can lead relatively emissive rate behaves sound more sensitively, suit to be used more forecast petrosal to destroy.

岩石破坏过程中岩石的声发射率和能率不完全一致，声发射能率的变化规律较声发射率表现得更加敏感，更适合用来猜测岩石的破坏。

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The mantle-derived peridotite inclusions with protogranular texture and porphyroclastic textures;(2) the pyroxenite inclusions with cumulate texture; and (3) the granulite and gneisses with crystalloblastic textures.

辽西的深源岩石包体也有三种结构类型：①具有原生粒状结构、残碎斑结构的幔源橄榄岩类岩石包体；②具有堆晶结构的辉石岩类包体；③具有变晶结构的麻粒岩和片麻岩类岩石包体。

Through several years' field observation and through the comprehensive analysis on fossils identification, rock geochemical test result and rock property, it is shown that the late Paleozoic radiolarian silicalite and its rock combination are a suite of oceanic basin abyssal facies deposition, and the Bazukeng Formation of Dengshan Group is a suite of early Paleozoic neritic continental shelf bathyal facies deposition.

经数年野外多次观察和对室内化石鉴定、岩石地球化学测试结果以及岩石学特征的综合分析表明，所发现的含晚古生代放射虫硅质岩及其岩石组合是一套洋盆深水相沉积；登山群拔竹坑组，是早古生代的一套浅水陆棚-深水陆棚-半深海相沉积。

And the results indicate that the principal stress directions in study area are mainly NE-SW, and the second substage tectonic twist made the direction deflect from North to East, but the primary direction changed little; tectonic activities during the O〓～S～D stage is some violent, most of the area are under high stresses status, and rock fracture degree is correspondingly higher, as coinciding with the drill cores observation, i.

通过数值分析，模拟了塔中Ⅰ号断裂带和塔中45井三维模拟区O〓灰岩的构造应力场和应变场，结果表明：研究区主应力方向为北东～南西向，第二期的构造扭动使其由北向东发生了一定的偏转，但总的方位变化不大；O〓～S～D时期，塔中地区构造运动较强，研究区大部分处于高应力状态，岩石破裂程度较高，而岩芯观察结果也证实了这一结果，即O〓灰岩地层中早期形成的构造结构面比较发育，单个结构面的规模也较大；C～P时期，岩石的破坏程度较早期有所提高，主要表现在两个方面，一是各局部区岩石的破坏程度普遍有所提高；二是各个级别破裂区的分布范围相应地扩大了；研究区应力分布表现出明显的不均匀性，特别是剪应力，无论是O〓～S～D时期，还是C～P时期，都有很大的差异性，特别是在小断层的端部，剪应力比较集中，而且在断层的两盘，剪应力方向和大小都变化极快。

This article mainly simulates gradually damage destruction process of rock, major in determinationg the definition of rock three-dimensional damage tensor, simplify to the damage tensor and obtain its engineering calculation method, and obtains the basic expression form of equivalent stress by equivalent stress assumption, symmetrization to the actual stress, thus obtains construction relation of the festival principle of three-dimensional damage rock mass, finally couples elasticity- plasticity with damage in the finite element equation, with reference to elasticity-plasticity gradually degenerated method thought, simulates rock damage to advance gradually the destruction process in finite element method, draws up elasticity - plasticity and damage coupling two-dimension finite element procedure with the C language in the VC contact surface, by simulating experiment destroyed process, acquires destruction image and the axial load distortion curve of model, agreement with the experimental result.

本文主要模拟岩石渐进损伤破坏过程，确定岩石三维损伤张量的定义，对损伤张量进行简化计算并得出其工程计算方法，采用等效应力假设得出有效应力的基本表达形式，对有效应力进行对称化，得出节理损伤岩体的三维本构关系，在有限元方程中实现弹塑性和损伤耦合；借鉴弹塑性渐进退化方法的思想，采用有限元的方法模拟岩石损伤渐进破坏过程，用C++语言在VC界面编制了弹塑性和损伤耦合的二维有限元程序，通过模拟已有的实验破坏过程，得出模型的破坏图像和轴向荷载变形曲线，与实验结果基本一致。

The properties of rock deformation and failure under the uniaxial compression are detailed.

0前言 岩石的变形断裂是岩石的重要力学特性，在工程实践中常常遇到单轴受压岩石的变形断裂问题。

Thermodynamics calculation of fluid/rock interaction illustrates that the sea water is heated and causes K-feldsparthization of rock when it is descending, and the hot fluid is cooled when it is moving and erupting and causes albitization of rock.

通过流体—岩石平衡反应的热力学计算，首次提出本区碱交代作用可能的机制：在水—岩反应过程中，下降的海水由于被加热，使岩石发生钠长石化；热的流体在运移和喷出过程中，随着温度的降低，使岩石发生钾长石化。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。